From: Alexander Ebert <ebert@woltlab.com>
Date: Sun, 10 Jul 2016 22:09:46 +0000 (+0200)
Subject: Ensure dom fragment is never empty in terms of child nodes
X-Git-Tag: 3.0.0_Beta_1~1206
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f97d313c0f8b21279aa06e0cd1ee183687921df6;p=GitHub%2FWoltLab%2FWCF.git

Ensure dom fragment is never empty in terms of child nodes
---

diff --git a/wcfsetup/install/files/lib/system/html/input/node/HtmlInputNodeWoltlabMetacode.class.php b/wcfsetup/install/files/lib/system/html/input/node/HtmlInputNodeWoltlabMetacode.class.php
index 8b8251d838..9311e2c91f 100644
--- a/wcfsetup/install/files/lib/system/html/input/node/HtmlInputNodeWoltlabMetacode.class.php
+++ b/wcfsetup/install/files/lib/system/html/input/node/HtmlInputNodeWoltlabMetacode.class.php
@@ -74,7 +74,10 @@ class HtmlInputNodeWoltlabMetacode extends AbstractHtmlInputNode {
 			
 			/** @var IMetacodeConverter $converter */
 			if ($converter->validateAttributes($attributes)) {
-				$newElement = $converter->convert(DOMUtil::childNodesToFragment($element), $attributes);
+				$fragment = DOMUtil::childNodesToFragment($element);
+				if (!$fragment->hasChildNodes()) $fragment->appendChild($fragment->ownerDocument->createTextNode(''));
+				
+				$newElement = $converter->convert($fragment, $attributes);
 				if (!($newElement instanceof \DOMElement)) {
 					throw new \UnexpectedValueException("Expected a valid DOMElement as return value.");
 				}